Cloudy plastic material
As suggested by Gorgious you should use Subsurface Scattering. Here I've tried with a Subsurface value of 1 and with a Radius setting of R = 2.5, G = 1.3 and B = 1. It's probably easier to get the desired effect in Cycles but in Eevee I cheated with a bit of Emission, otherwise it would have looked a bit too dull. Also, give it a bit of bump: